Find at least first 3 non zero terms of the series for the solution to the initial value problem: y''+x2y'-xy=0, y(0)=1, y'(0)=0 ?

find at least first3 non zero terms of the series for the solution to the initial value problem: y''+x2y'-xy=0, y(0)=1, y'(0)=0 Over what interval the solution is analytic? what is the the radius of convergence of the series solution around x=0? This is pure mathematics who can do this?